Ladle-drying apparatus



Patented dune l2, 1923.

masa

Parar are,

GEORGE R. MCDERMOTT, OF CHICAGO, ILLINOIS.

:LADLE-DRYING APPARATUS.'

Application filed August 25, 1920. Serial No. 405,984.

To all whom t may concern.'

Be it known that I, GEORGE R. MODER- Mo'rr, a citizen of the United States, residing at Chicago, in the county of Cook and State of lllinois,vhave invented certainl new and useful Improvements in a Ladle-Drying Apparatus, of which the following is al specification.

My invention relates toapparatusforuse in drying ladles and`has for its particular object the provision ofladle dryingY apparatus in which a flame can be introduced into a ladle so that the ladle is quickly dried and all moisture removed therefrom.

ln blast furnace operation it is essential that all receptacles in which molten steel is poured should have all the moisture removed therefrom, as disastrous results have 'followed the pouring of molten steel or iron into receptacles in which` there is a small quantity offwater, or where there lis any moisture in the ladle or the lining of the ladle. v

Another and further object of my invention ,is the provision of a drying apparatus comprising a burner centrallylocated lof a cover of substantially the same diameter of the insideofthe vessel, as for instance a ladle, or slightlylgreater than the diameter of the vessel so that as the cover is placed over the vessel, but separatedtherefrom, a

slight distance, a. fiame directed downward from the burner towards the bottom of the vessel will turn outward and vupward along the inside side walls of the vessel and pass outward over the top edge of the vessel and under the cover thus thoroughly `drying the walls of the vessel. y i' Another object of my invention is the provision of means whereby oil may be mixed with air and burned directly inside of the ladle, so that yall of the moisture l,is removed therefrom pri/orto the pouring of steel into the ladle, or the devicemay be used for the drying of molds prior to the pouring of steel therein.4 y i Another and further object of my invention is the provision of ladle drying apparatus which is simple in operation and eicient in results, and whichsecures a maximum result with a minimum use of fuel.

These and other objects of my invention will be more fully and better understood by reference to the accompanying sheets f of drawings, in which- Figure 1 is a side view in elevation showing the ladle drying apparatus and a ladle in position to be placed upon the ladle holding stand and a section of the platform upon which the apparatus is mounted; and

Figure 2 is a detail sectional view of the burner and portion of the ladle cover.

Referring specifically to the drawings, 10 and 11 are foundations upon which vertically extending arms `12 and 13 respectively, are secured and which are adapted to support a ladle 14 by engagement with'thel trunnions 15 and 16 on each side of the ladle 14 and which rest in "seats 12a and 13a inthe upper ends of the arms 12 and 13. i Avertically extending beam 16b is provided which sets upon the foundation 10 and supports a transverselyextending beam 17 which is secured to the member 16" at one of its ends and is supported at its oppositeend by a foundation and a beam similar to the foundations 10 and 161. A pair ofvhorizontally extending beams 162L are provided which are secured to the beam 17 and which with the beam 17 forms the. foundation for 'a plat'- form 17a upon which the operator stands. Mounted upon the beam 17 is a crane 18 secured to the beam 17 in any approved manner, and having a socket 19 into which a vertically extending hollow standard 20 is litted. Secured to the upper end ofthe standard 2O in any approvedmanner, as by the stra-p 21, is a horizontally extending arm 22. An arm 23 extending parallel with the Vstandard 20 is provided, secured at its upper end to the member 22 and at its lower end to members 24 which engage the standard 20 on each of its sides. Secured to the members 24 is also an upwardlyextending arm 25 which is secured to the member 22 at about its middle portion and forms a,y support for the member 22, the standard 20, and` memcable 28 wound thereon which extends'over a pulley 29 secured to the member 22 near its inner end and passes outwardly along the arm 22 over a pulley 30, secured to the member 22 nearits Vouter end and thence downward, and has la hook 31 at its lower end. A ladle cover 32 is provided which has upstanding portions 33, 33 by means of which cables 34, leading to the hook 31 are provided so that the ladle cover is held suspended and is under the control of the loperator by means of the cable 28 wound around the drum 26.

An air supply pipe 35 is providedleading to any'suitable source of compressed air,`

the said pipe 35 being connected to the hollow standard 2O by means of an elbow 36.

"A cap ,37 is provided for the hollowstandard having a ball joint 38ksecure'd thereto` and to which 'a' pipe'39 is .securedv in any suitable manner, the said Vpipe 39 leading outward parallel with the 4member 22 and `is secured to the outer end thereof by means of aclip 40. A flexible pipe or hose ,41 is secured to the pipe 39 by means of, a suitable connection 42v and through whichcompressed air is supplied tothe burner as hereinafter described. An oil'supply pipe 42 is provided Which passes upward along thev arm v to themember 22 and thence downward and.v has secured thereto a flexible hose or Vpipe 43'kby meansof a suitable connection 44.' Mounted, within an opening 45 in the ladlefcover isla burner 4,the said burner being secured tothe ladle cover by means ner. yThe burner comprisesy aL cylindrical member 47? having an opening 48a therein and a cap 49l which issecured in yposition by, means of bolts 50, 50.v A nozzle 51 whichl extends into vthe opening 43? of, the burneris provided,I the nozzle 5l being in threaded engagement with lthe cap 49 and thereby held in position. Openings 52, 52 are provided inthe sidewalls of the ineinber 49 andl through which atmospheric air is taken into the combustion' chamber 48a.

1A.` globe valve l53,;to vwhich the lair supply ypipe 41'and oilfsupply `'pipe 43 are con` V nected,fis provided to which is "also coni itslower endin the usual form is provided .and having a wheel 56 which provides means" nected thenozzle51 by means of aconnection 54. A valve stem 5 5 having a seat on .-{for shutting off the supply ofV oiland air,

@as ,will be hereinafter described,

l In' the operation ofthe device the ladle .14 is placed in position by means of a crane uponrthefl'adle vsupports'12y and 13 and the cranecarrying the ladle cover is swung upward so that. the` ladlei cover is immediately Iover .the ladlel The'valve 53 is open so that the, compressed air is admitted into the noz- 'zle 51 carrying with it a supply of oil through the Vpipe 43, theV mixture being lighted and the ladle cover is thereupon swung into position over the ladle and lowycan escape `from Ithe ladle. A further supply of air is pulled inwardlyy throughmthe openings 5,2-and the cap 49`so that the pil is thoroughly mixed with the air vand proper.

combustion of the oil is secured. yThe apparatus isfallowed to lremain inv position until the mold is thoroughly dried, whereupon the ladle cover is swung out of positionv and themold is ready to' be removed to receive a charge of molten metal.-

It will be understood that 'thec'ra'ne is centrallylocated Ibetween four ladle stands so that each 'crane Acan be used alternately for yswinging the ladle vcover and 'burner'. ,A into position over each 'ladle stand.

While' l have describedmore "or less precisely the `,details of construction, I do not wish to be understood' as limitingl myself thereto, as Icontemplate changes in form and the proportion of parts and the substiy v l tution of equivalents as circumstances may of angles 47,` and 48 many approved mansuggest or render expedient without departing from the spirit or scopel of my invenbination of a burner, means for supplying fuel to said burner, a cover through which said burner extends and means for suspend- 'ing the cover above a ladle, the marginal ed es of the said cover conforming in lshape sustantially to the form of the opening in 'said ladle, the'said cover'platepbeing held outvof contact with the ladle during'the `operation of the burner.

2. In a ladle drying apparatus, theI combination of aburner, means for supplying a fuel to said burner, a cover through which said, burner extends of slightly larger diameter than y ther opening ,of ,said ladleand conforming in shape thereto and means for suspending thel cover ,of a ladle and cut of contact with the upper marginal edges thereof. g

3. In a ladle dryingapparatus, the combination 'of a burner, means for 'supplying liquid fuel and airto said burner, a`- cover through which thesaid burner extends, andl means for vsuspending the cover over avessel, the said coverlbeing slightly larger in diameter' than the inside diameter of the Vestherethrough, means for supplying fuel to sel, and being held out of engagement with said burner and means carried by said crane the ladle during operation of the said whereby the said cover is held over a Vesburner. vel and out of Contact therewith.

5 4. In combination, a revolving` crane,v a Signed at Chicago, Illinois, this 11th day cover plate suspended from said crane, a of August, 1920. n burner in said cover plate and extending GEORGE R. MGDERMOTT. 

